Strut-door.



, UNITED sTATEs PATENT oEErcE. i

JOHN EDW. OGDEN, 0F MOUNTAINVILLE, NEW YORK, AND CHARLES C. TOMKINSON, 0F PLAINFIELD, NEW -J ERSEY; SAID TOMKINSON .ASSIGNOR TO SAID OGDEN.

sTnUT-Doon.

Specication of Letters Patent. Y

Patented Nov. 5, 1918.

Application filed October 30, 1917. Serial No. 199,276.

To all whom t may concern:

Be it known that we, JOHN EDWARD Oc.- DEN, a citizen of the United States of America, and a resident of Mountainville, town of Cornwall, Orange county, and State Y of New York, and CHARLES C. ToMxINsoN,

lates more speciiically to two sectiondoors. j

Its object is to provide a simple but strong operating mechanism for such doors which is so arranged that the door is amply supported in all of its positions.

Another object is to provide struts for supporting the door in certain of its open positions and automatically actuated mechanism for movingthe struts into the desired supporting relation with the other parts of they apparatus.

In order that vour invention may be thoroughly understood we will now proceed to describe the same in the following specification, and then point out the novel features thereof in appended claims.

Referring to the drawings:

Figure 1 is a sectional side elevation of a door made according to and embodying this invention, with the parts shownin the positions they assume when the door is closed.

Fig. 2 isa similar view of the same parts with the door fully open. Y

Fig. 3 is a vertical sectional plan view of some of the parts shown in the preceding figures, the section being taken on the line 3 3 of Eig. 1.l

` Fig. 4; is a side elevation of a door having an operating mechanism of still different construction, which is also van embodimentk of this invention, the door being shown in its closed condition.I

Fig. 5 is a similar view ofthe structure of Fig. 4 with the door fully open.

Like` characters of reference designate corresponding parts in all `the figures.l

10 designates the side posts and 11 the lintel of a door opening. This is closed by a 'door which comprises an upper section 12, and a lower section 13. At the" sides of the upper section are guideslt up into which thel lower section slides. Guide rollers 15 are provided at the lower corners of the A lower door section, which run upon the door posts 10. I-Ioisting chains 16 are also connected with these lower corners ofthe lower door section as for example to the pivots of ythe guide rollers 15. These chains run up over sheaves 17 on a shaft 18 above the door opening and down to counterweights 19 to.

which they are aflixed. It is to be understood that the shaft 18 extends across the width of the door opening and that above each of the rollers 15 asheave 17 is aiiixed thereto. Actuating mechanism for shaft 18 such as a hand chain and suitable gearing is provided, but these are not shown as they are well known and understood and form no part of the present invention.

Pivoted to brackets 20 which are affixed v to the sides of the upper door section, are

struts 2l. On the lower ends of these struts are pivots 22 each of which rotatively supports a pair of guide rollers 23 ofk like diameter and a sheavev 21 of smaller diameter between the rollers. The guide rollers run between vertical guides 25. 26 are flexible elements such as ropes or chains which are aflixed to the lower corners of the upper door section at 27, run down under the sheaves 241* and up to stationary anchorages 28 above the door opening.

30- are head chains connected with the upper corners of the upper door section at 31 and to stationary anchorages 32 above the door opening.

Before more specifically describing the structures shown in the other Iigures of the drawings, we will describe the operation of the apparatus shown in Figs. l, 2 and 3.

When the sheaves 17 are rotated to raise the hoisting ropes 16, the lower door section 13 will be raised in the guides 14 to a position back of the upper door section 12. Its further movement relative to the upper door section is' limited by the pivots of the guide rollers 15. Further upward movement of the hoisting chains will cause the lower edges of both of the door sections to rise vertically. But during this movement the other parts of both door sections will swing inwardly, supported by the struts 21.

In order that the strutsproperly suppOI't up to iXed'anchorages 43.

the door scribes as they Swiilgiaeafkiiy, it

is necessary thatthe positions of their lower endsr be raised 'and a'tfrv thefsame time siip l ported. This is*accomplished'by'theiropes 26. It may be seen that as the lower corners of the door sections rise, the points of rope c ,onnQQtion127 goiriip with them.; This will cause the ropes 26 to raise the sheaves 24 and the lower ends of the struts o ne'-4 half therate of movement of the. hoisting chains and( will produce the. -desired result.

The yhead .chains 3 0 jareprovidedfto siip` port the Lipper ends offtlie door sections 'as i the weight thereof above thepivotal;connet'i-v lowered automatically by l the movement'ofthe points 27.

'In the arrangementshown in Figs. and

5, the hoisting 'ropes 40are;connected'withz the' lowerzcorners offthe' `lower door section' as in the other case', run 'overl the vsheaves 1 7 on the overhead transverse shaft 18, down" under sheaves 411011' Vcounterweights 42 Another ropeAA'is "connected theL l5-# 46 and to another counterweight 47. On the' shaft 18 isa geardandfa" rotative arm 51. geai` 5.2 {mount/ed on" this is in'ineshfwith ygear 50 and. 5 3 is a gear con# nected'with"sheaveii. '54' a pivoted-leverl` connectedfwith. the arnilbya rod 55. This is` provided witlraI `forked portion' 56 anda which I loverhan with tliestrutsl When the" haft i'18 `is rotated to open .theft door, the operationofthedoor sections willY b .th Same' Vagvthat previously explained.

parted to sheave' liwhichfvi'ill caused the' openingV inovenieiit and while the door is "op ei engagsftherdkai teef-lieven@ and cal guidesffor the lower ends of the strnt's,

:invention in order to show that it is not limited to any specic form of construction .I and-in: factgintend no limitations othenthan those imposed by the appended claims.

What we claim is: i '1. A door verticallymovableat a c ertain point thereof;Vv and a`dapted' at other points to other. points', andimans Iforisupprtiiig the lesserV ldegreeVV than they.'

porting action` as t0 said other' points, verdand" means for supportingthe lower ends of the Struts actuated by the waarmee/femme j of said pointsto alesser-degree tha1 they.

Af door @vertical l5r movable at certain points thereoffand adapted 'another-'points lower end of each'strut 21', up.0versheaves l to swing out rof afi'fertical' planej hoisting the door fother than theA vertiealmovable points, thereofito have' a supporting action as to said other points, vertical*guidesv for points" of the door, ystruts ,having-their :Upper ends pivotally connected f with the edges of the` lower ends of the struts, sheaves on the struts, and flexible elementsfjconnected with theverticallymovableg'points of `the door door causes Yarediice'dmovement of the lower ends'. 'ofthe striits Ythe guides.V t

Je 'A doorhaving itslower edge arranged to inoyef--ve'rtically,and its other parts ar ranged'A to swing` o11t -of a` vertical plane,

hoistingv "means connected Ywith the lower In this case however," when VYthe lower door!Y Sr reehsthe. llpitrjend-O its vertical movement, 'the bracket; 59 will*v engage. the"y forked portion 56 of `lever54 and raise it and.

tlie'warni I5 1.k vf'lhe 'spring57YV will complete' this. movementf until4 geary 52 brought; inkk L mesh witli'gear [53,"V The/rotation or shaft 1S throiigh' the` gears describedl will 'nowbeiimfcorners Qtthe door, struts having their up' per ends' pivotally connected with the edges l opening, whereby the' Verticalmovement of ropes 4:4; to raise and support-the lower.`ends. off the 'strnts5 diiring-`y the remainder V'of the :support the .Y striits" the door causesy a reduced' movement ofthe lower-ends of the strutsin the guides. f

5. A door having its lower edge arranged tomove vertically andits Aother partsar- .t remain, mllfsllfandf the struts aielowered"iitiltheQbracket '5.9

ranged to Y swing ont of a vertical plane, hoisting means connected withfthe'lower corners of/the door, struts havingtheir upper ends cal guides for the lower ends ofthe struts,

pivots on the lower ends of the struts, a pair of guide rollers on each of said pivots, a sheave on each pivot between the guide rollers thereon, flexible elements connected with the lower corners of the door running under the sheaves and to an anchorage above the door opening, whereby the vertical movement of the door causes a reduced movement of the lower ends of the struts in the guides.

6. A door comprising an upper section and a lower section, guide connections between the sections to provide for the lower section being raised up beside the upper section, downwardly extending struts at the sides of the door opening having their upper ends pivotally connected with the sides of the upper section above its lower edge, vertical guides for the lower ends of the struts, means for vertically lifting the lower edges of the door sections in a vertical plane and permitting the other portions of the sections to swing out of the Vertical plane, said struts being arranged to have a supporting action as to said other portions of the door sections, and means actuated by the vertical movement of the sections arranged to raise the lower ends of the struts in their guides at a lesser degree than that of the lower edges of the door sections and to support said struts.

7 A door comprising an upper section, guides thereon, a lower section slidable in said guides, stationary vertical guides for.

the lower corners of said lower section, down-,

wardly extending struts at the sides of the door opening having their upper ends pivotally connected with the sides of the upper section above its lower edge, vertical guides for the lower ends of the struts, hoisting means connected with the lower corners of the lower section for raising the lower section up into the guides on the upper section and for thereafter raising the lower edges of both sections vertically, permitting the other portions of the sections to swing out of the vertical plane, said struts being arranged to have a supporting action as to said other portions of the door sections, and means automatically actuated bv the movement of the two sections arranged to raise the lower ends of the struts in their guides at a lesser degree than that of the lower edges of the door sections.

In witness whereof we have hereunto set our hands this 26th day of October, 1917.

J. EDW. OGDEN. CHARLES C. TOMKINSON.

Copies of this patent may be obtained for five cents each, byl addressing the Commissioner of Patents, Washington, '.D. G. 

